In the standard, the server component is implemented for Skype4B. This allows a customer to replace the TAPI driver for CTI and to communicate via Skype4B. The corresponding installations are required on the Skype server. The Skype driver is then set as the driver in the CTI configuration instead of the TAPI driver.
Skype for business (Skype4B)

Skype for business (Skype4B) (schema)
Information on installing and configuring Skype for business can be found in the document Skype for business (PDF, German), or contact your project engineer at JustRelate.